London: Singer Katy Perry reportedly has a suitcase full of different-coloured blue wigs after she damaged her real locks with constant colouring. "Katy`s own hair began to get damaged because of all the dyeing, so she`s started wearing wigs," a website has quoted a source as saying.

However, the singer doesn`t want her fans to notice this. "Katy wants the wigs to look as real as possible so they are all cut and styled by her own hairdresser," added the source.